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CVE-2026-24882

Gnupg buffer overflow

8.4 HIGHPublic exploitEPSS 0.44%
  1. Published27 Jan 2026

Description

In GnuPG before 2.5.17, a stack-based buffer overflow exists in tpm2daemon during handling of the PKDECRYPT command for TPM-backed RSA and ECC keys.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Gnupg≥ 2.5.13 < 2.5.17
Gpg4win≥ 5.0.0 < 5.0.1

Remediation

Fixed in
Gnupg≥ 2.5.17
Gpg4win≥ 5.0.1

References

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Frequently asked

Is CVE-2026-24882 being actively exploited?

CVE-2026-24882 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.44%.

How severe is CVE-2026-24882?

CVE-2026-24882 has a CVSS 3.1 base score of 8.4, rated high. EPSS estimates a 0.44% probability of exploitation.

Which products are affected by CVE-2026-24882?

Affected products include Gnupg, Gpg4win.

How do I fix CVE-2026-24882?

Upgrade affected software to a fixed version, for example Gnupg 2.5.17, Gpg4win 5.0.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.